64 
Genus MACQUARTIA Desv. 
Macquartia NDesvoidy, Essai sur les Myodaires, p. 2045 1830. 
Amedea Desvoidy, loc. cit., p. 207. 
Albinia Desvoidy, loc. cit., p. 209. 
Aporia Macquart, Diptéres Exotiques, Supp. I, p. 168; 1846. (Non Huebner; 1816.) 
This synonymy, with the exception of the last one, is given by Schi- 
ner;' the name of Aporia having previously been employed in the 
Lepidoptera, the species heretofore placed in this genus may with pro- 
priety be placed in Macquartia, to which genus our species has been 
referred by Brauer and Bergenstamm in litt, Our single species is 
black, the base of the antenn, palpi, and apex of proboscis, yellow; 
three postsutural and two sternopleural macrochete; length, 8 to 10 
mm. Mount Washington, N. H.; New Bedford, Mass.; District of 
Columbia; Aurora Mills, Oreg., and Siskiyou County, Cal. (List of 
Dipterous Insects, Part IV, p. S841; 1849: Dexia. Aporia limacodis 
Townsend, Psyche, Vol. VI, p.275; June, 1892. Macquartia sp., Brauer 
ANG Maser CCHS LAI I ULES), soles ets Se ee nese ee pristis Walk. 
Genus HYALURGUS Br. and Berg. 
Hyalurgus Brauer and Bergenstamm, Zweif. Kais. Mus. Wien, VI, p. 136; 1893. 
Our species is black, the base of antennie, palpi, apex of proboscis, 
scutellum, tibiz, and tarsi, yellow; three postsutural and three sterno- 
pleural macrochete, last three segments of abdomen bearing discal and 
marginal macrochetie, middle tibive each bearing three macrochetie on 
the front side near the middle; length, 7 mm. Illinois. (Can. Ento- 
mologist, Vol. XXIV, p.81; April, 1892: Macquartia.).-johnsoni Town. 
Genus POLIDEA Macq. 
Harrisia Meigen, System. Besch. Eur. Zweif. Insekten, Vol. VII, p. 260; 1838. (Non 
Desvoidy; 1830.) 
Polidea Macquart, Annales Soc. Ent. France, p. 92; 1848. ° 
Somoleja Rondani, Atti Soc. Italiana Sci. Nat., Vol. VIII, p. 35; 1865. 
Polidea was proposed for the genus Harrisia of Meigen, the latter 
name having been previously used in the Diptera. According to Brauer 
and Bergenstamm, Harrisia of Meigen is identical with Somoleja of 
Rondani.? Our single species has the body and sides of the front 
shining black, with a tinge of bronze, almost destitute of pollen; three 
postsutural and three sternopleural macrochete, last three segments of 
abdomen bearing discal ones, third vein bristly at least halfway from 
base to small crossvein, middle tibiz each bearing two or more macro. 
cheetie on the front side near the middle; length,5to 7mm. Georgetown, 
Canada; White Mountains and Franconia, N. H.; New Bedford, Mass.; 
1Fauna Austriaca, Vol. I, p. 528; 1862. 
2Zweif. Kais. Mus. Wien, VI, p. 231; 1893. 
